Improve how capacity consumption calculations are performed

module/documents/Item/GenericItem.mjs

@@ -1 +1,12 @@
-export class DotDungeonItem extends Item {};
+export class DotDungeonItem extends Item {
+	get usedCapacity() {
+		let capacity = 0;
+		if (this.system.uses_inventory_slot && this.system.quantity > 0) {
+			capacity++;
+		};
+		if (this.system.quantity_affects_used_capacity) {
+			capacity *= this.system.quantity;
+		};
+		return capacity;
+	};
+};

module/documents/Item/Material.mjs

@@ -0,0 +1,9 @@
+import { DotDungeonItem } from "./GenericItem.mjs";
+
+export class Material extends DotDungeonItem {
+	get usedCapacity() {
+		let affects = game.settings.get(`dotdungeon`, `materialsAffectCapacity`);
+		console.log(`materialsAffectCapacity =`, affects)
+		return affects ? super.usedCapacity : 0;
+	};
+};

module/documents/Item/_proxy.mjs

@@ -1,8 +1,10 @@
 import { DotDungeonItem } from "./GenericItem.mjs";
 import { Aspect } from "./Aspect.mjs";
+import { Material } from "./Material.mjs";
 
 const classes = {
 	aspect: Aspect,
+	material: Material,
 };
 
 const defaultClass = DotDungeonItem;